Quote:
Originally Posted by svx1999
You'll have to forgive me it's been a hot min since I read much on the SVX.
But I do recall the canister develops cracks or leaks over time. and yes it's another source of the elusive surging idle. more or less sounds like you have a leak somewhere and You've found it. there's also an Iris valve buried in the intake that causes issues when dirty. but since it's been so long since I looked at how things were routed I'd say look up some of the scans of the technical manual of intake and vacuum routing. I know there are MANY posts covering the EGR, and Canister as well as lines. but right now my knowledge of what lines go where and how they are routed is a bit limited. Be careful with some as they get VERY brittle. pcv is buried in the middle plenum under the decal plate and has a shaped hose, easiest fix ( heater hose and be done. the rest of the connections on the valve covers and other ports just too easy to grab a bulk cut of silicone. might be easier. I'd also post on the facebook pages for the group as many members are active. I've kinda been out of the game since I lost mine.
But yeah I recall some info on the canister more or less goes bad and cracks form around it. Biggest demon with this car is things just get OLD brittle and rot. Rubber rot plastic hardens and snaps.
Ryan
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I hear that replacing that PCV Valve is tricky. My dipstick usually pops up a quarter inch after driving 10 miles so someday I'll find a smart mechanic that will do it without taking off the Plenum manifold.
Taking off that Plenum is costly since the intake gaskets have to be replaced each time and carefully re torqued by a skilled professional.
IDLE FIXED!! So, I made me a silicone plug using bathroom white caulking sealer (made by GE- 100% Silicone) and twisted it into the return (suction) side of the charcoal canister hose, taped it on securely with electrical tape and let it sit on top of canister, started car (VERY strong start, it was instant) barely any blue smoke from the tailpipe this time and let it warm up. PERFECT idle. Drove my awesome 1992 SVX with 298,000 miles on it for about 5 miles, EXCELLENT power, very smooth, no power drag in any RPM or car speed. VERY happy.
I suspect my Purge Control Valve is M.I.A. though plugging the return line seems to bypass it.
OH, haha. No surges on (getting less as I drive it) on acceleration anymore..very pleasant ride now. ��
UPDATE: My CHECK ENGINE light no longer turns on/off like Casper The Ghost on a 'spook mission' ��